Metallic shingle or roofing-plate



(No ModeL) J. S. THORN.

METALLIC SHINGLE 0R 300mm PLATE.

Patented Apr. 12, 1887.

UNITED STATES PATENT OFFICE.

JACOB S, THORN, OF PHILADELPHIA, PENNSYLVANIA.

METALLIC SHINGLE OR ROOFING-PLATE.

SPECIFICATION forming part Of Letters Patent No. 361,031, dated April 12, 1887.

Application filed December 27, 1886. Serial No. 122,597. (No model.)

To all whom it may concern:

Be it known that I, JACOB S. THORN,-Of

Philadelphia, State of Pennsylvania, have inthe kind which, like those shown and described in my former Patents, Nos. 341,966 and 341,967, of May 18, 1886, are made with their lower points raised some distance from the plane of the roof and tapering back gradually to said plane; and the object of my invention is to provide means for securing the lower points in place and prevent them from curving or bending upward so as to leave an opening between the points and the shingle or shingles below them.

Reference being now had tothe drawings which illustrate my invention, Figure 1 is a plan View of four of my improved shingles, of adiamond shape, interlocked together as they are secured upon a roof. Fig. 2 is a crosssection of the upper part of one of my shingles, taken on the linear m, Fig. 1. Fig. 3 is a crosssection of the joint between two shingles, on the line y Fig. 1. Fig. 4 is a cross-section on the line to w, Fig. 1. Fig. 5 is a cross-section on the line z z, Fig. 1. Fig. 6 is a perspective view of one of my shingles; Fig. 7, a view of the three lower shingles united, as shown in Fig. 1, but having the upper shingle removed. Fig. 8 is a view of a shingle of a modified shape, but which, like the others, embodies my invention; and Fig. 9, an edge View of the shingle shown in Fig. 8.

A, B, G, and D, Figs. 1 to 7, and M, Figs. 8 and 9, are shingles made inaccordance with myinvention. These shingles, as is described in my said former patents, have their lower corners and edges bent so as to form triangles or inclined flanges F E, which elevate the points a of the shingles and cause their lower surfaces to slope gradually back to the plane of the roof.

N is a corrugation intended to stiffen the shingle.

H h and J j are elevations or corrugations formed in the metal of the shingle, and serving to regulate the positions of the shingles upon each other, and to prevent the entrance of water'through the joints.

G and I are the flanges, by means of which the shingles are secured to the roof.

All of the above-described elements of my shingles are shown and described in my former patents.

My present invention consists in adding to metallic shingles of the general character above described a fold, K, formed just inside of one of the lateral nailing-flanges, and in adding to the opposite overlapping edge a projecting flange, f, adapted to enter the flange K, as shown in Fig. 3, and thereby lock the overlapping edge of the shingle securely to the shingle below, and overcome any tendency in the shingles to bend or curve upward at their points.

In shingles having long points, like those shown'in Figs. 1 to 7, it is desirable to adapt the flanges f and folds K to engage and lock the edge of the shingle all the way down to the extreme point; but where the point is more abrupt, as in Figs. 8 and 9, it is sufficient to interlock the shingles only along the vertical edge, as there shown.

The corrugation J or J, in Figv 8, running along just outside of the fold K, serves as a water and anti-capillary dam, and secures the seam against leakage, as well as serving to regulate the position of the sheets upon each other. 1

The function of the corrugation N in the center of the shingles is to act to stiffen them; and while I consider it advantageous to continue its use, it is of course no longenso nec essary as in those constructions where the points and edges of the shingles are not directly secured to each other.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In combination with a metallic shingle having its lower point elevated 01' struck up, substantially as described, the fold K, formed inside of the lateral nailing-flange, and the 5 flange f, formed on the opposite lappingedge thereof.

2. In combination with a metallic shingle having its lower point elevated or struck up,

substantially as described, the fold K, formed inside of the lateral nailing-flange, and the 10 corrugation J running parallel to and just outside of the fold.

JACOB S. THORN. Witnesses:

JOHN W. MATLOOK, J r.;, FRANCIS T. CHAMBERS. 

